ProBeam proton therapy system - 4 Pages

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Catalogue excerpts

ProBeam proton therapy system Features and specifications The ProBeam™ proton therapy system from Varian Medical Systems offers the latest techniques in intensity-modulated proton therapy (IMPT). This fully integrated system brings together advanced capabilities in treatment planning, oncology information, imaging, and patient positioning with the latest in scanning technology. This document presents an overview of the major ProBeam system features and the individual ProBeam subsystems. The specifications included are intended as a potential approach to configuring the ProBeam system. Overview of system configuration Proton therapy system layout Gantry and robotic treatment table Dynamic Peak™ integrated scanning technology for IMPT treatments Proton accelerator: 250 MeV isochronous superconducting cyclotron Energy selection system Beam transport system

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ProBeam proton therapy system Proton therapy system layout Gantry and robotic treatment table The proton therapy hardware consists of a cyclotron, an energy selection system, and multiple treatment rooms in the form of either rotating gantry or fixed beam rooms. The beam is transported from the accelerator and the energy selection system to the treatment rooms via the beam transport system. The gantry beam line provides round beams with variable radius at the isocenter. The beam can be adjusted for a variety of radiation applications. At the treatment position and above 90 MeV, the minimum beam...

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All treatment tables are computer controlled with six degrees of freedom. They are designed for a maximum load of 273 kg (600 lbs) and are equipped with load cells to permit patient weight variation compensation. This dynamic compensation permits the treatment table to be positioned within a radius of 0.5 mm, thus making the use of a third X-ray axis obsolete. Time spent in patient positioning is reduced. In an emergency, the system allows the table to be manually moved into a safe position without electrical power. Safety/collision detection Treatment Envelope In order to avoid collisions between...

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ProBeam proton therapy system Dynamic Peak integrated scanning technology Energy selection system Dynamic Peak™ integrated scanning technology provides a beam with multiple diameters and round cross-sections at the isocenter. This scanning nozzle can deliver intensity-modulated proton therapy (IMPT) treatment. The x-y deflection system consists of two orthogonal scanner magnets. The variable slit energy selection system allows the energy to be adjusted from 245 MeV to 70 MeV, and permits selection of an appropriate energy spread. Scanning system parameters Proton energy Field area Minimum beam...

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